How do i use translate in the Controller using Zend?

To use translation in the controller:

$this->view->translate('Something to translate');

Or create a translation action helper if you want to keep everything clean and pretty (although I don't think it's worth the trouble in this case).

If you're creating the zend_translate object in the bootstrap, you can set it in the Zend_Registry for later use:

Zend_Registry::set('translate', $translate);

and then use it in the controller:

$translate = Zend_Registry::get('translate');
$translate->translate("hello");

As far as I know, Zend_Controller doesn't include built-in support for zend_translate.